![]() ![]() A pressure sensor is connected to intake air distributor. 2: Sectional View of Cold Start InjectorĢ AIR SYSTEM Intake manifold, connected to an intake air distributor, supplies the cylinders with air. A secondary system carries excess fuel from the pressure regulator back to fuel tank. ![]() Main system consists of one injector for each cylinder, a cold start injector and a pressure regulator, which maintains fuel pressure at 2.0 kg/cm 2. OPERATION FUEL SYSTEM An electrically driven fuel pump forces fuel through a filter, into the main system. An auxiliary air valve, cold start injector and thermotime switch aid in cold starting and operation. Engine speed, temperature, and other factors are monitored for the purpose of fine-tuning injection duration. The D-Jetronic system measures incoming airflow by monitoring intake manifold pressure. ![]() The D-Jetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control air/fuel mixture. 1 BOSCH D-JETRONIC Volkswagen: Type 3 & 4 MANIFOLD PRESSURE CONTROL SYSTEM (MPC) DESCRIPTION The Bosch D-Jetronic electronic fuel injection system is composed of 3 major subsystems: the air intake system, the fuel system, and the electronic control system. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |